Improvement in steam-heating pipes



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WILLIAM MENDHAM, 0F PHILADL CYRUS CHAMBERS,

PHIA, PENNSYLVANIA, ASSIGNOR TO JR., AND EDWIN CHAMBERS, OF SAME` PLACE.l

Leiters Patent No. 101,488, lated April 5, 1870; afn-tclia'tcd March 29, 1870.

IMPROVEMENT I N STEAMHEATING PIPEs.

The Schedule referred to in these Letters Patent and making part of the same.

T o all whom it may concern:

Be it known that I, Tintin u MnNnuAn, ot' the city and county oflhiladelphia, in the State of Penn` Sylvania, have invented a new and useful Improvemeut in Steam-heating Pipes; and I do hereby declare the following to be a full and correct description of the same, reference being had to the accompanying drawings, in which- Figure l is a longitudinal section of the pipe Fivure 2 is an end view showin the face of thel llange; and

Figure 3 is a longitudinal section showing between two lengths of pipe with a packing applied.

The same letter marks the same ures.

fVhen lax-gc numbers of' pipes are united by their ends, and used for the conveyance of steam, as in ap the joint of rubber part in all the iig- 4 paratus for heating buildings, they are exposed to great changes of temperature, and consequent expan-v sion and contraction. The aggregate of this expanding or contracting action, in long ranges of pipes, is very considerable, and it is not an uncommon' occurrenee for the packing between the pipes to be so' loosened by their contraction` on cooling, when th/e steam is turned off, that it is immediately blown out when the steam is again let on.

' The nature of this invention consists in making the outer faces of the flanges of pipes intended for the conveyance of steam corrugated or ribbed, such ribs being directly opposite each other, so as not to interlock, but to abut against each other when the flanges are brought into contact, so that when two such flanges are brought into juxtaposition with a packing of rub- 5 way, therubber packing ber between them, the ribs or projections on their faces will penetrate the rubber, and securely hold it so that the pressure ofthe steam will not blow it out, when, by the contraction of the' pipe, the longitudinal pressure upon the packing is diminished.

The method of 'casting my improved pipe is fully `described in anapplication of even date herewith, for

a patent for that method.

The drawings illustrate clearly the form of the pipes. They have flanges f f on their ends, and upon the faces of these flanges are raised two or more ribs or corrugations c c, as shown.

. ent, is-

A steam-pipe with ribs or faces of its flanges, other when the flanges are in contact, as and for the purpose set forth.

The above specification of my said invention signed and witnessed at Philadelphia this 2d day of April, A. 1). 1869.

corrugations on the outer t Y WILLIAM MENDHAM. Witnesses lnonwAnn 01m. Dimonc, Wir. Pinon D." 'rs so arranged as to abut against each 

